CAPE CANAVERAL, Florida (Reuters) - A small NASA telescope was poised for launch on Thursday on a mission to determine how the sun heats its atmosphere to millions of degrees, sending off rivers of particles that define the boundaries of the solar system.
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On Earth, polycyclic aromatic hydrocarbons, or PAHs, are best known as carcinogens and environmental pollutants, produced as byproducts of fuel burning. It turns out these complex hydrocarbons are also contributing to the thick orange-brown smog that cloaks Saturn's largest moon, Titan, researchers
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As Republicans block President Obama's nominee to head the EPA, Chris Hayes notes that carbon in the atmosphere is about to hit its highest level since the Pliocene Era, three to five million years ago, and Senator Sheldon Whitehouse smacks down a colleague who says God won't allow us to ruin the Ea

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The first observations of the lowest layers of the sun's atmosphere are seen in a handout image from NASA's Interface Region Imaging Spectrograph spacecraft released July 25, 2013. IRIS's first images show a multitude of thin, fiber-like structures that have never been seen before. The images also